Aipac says it could live with opposition to amendments it would normally support

WASHINGTON—The country’s most powerful pro-Israel lobby is urging senators to support a bill giving Congress a role in reviewing a nuclear deal with Iran, even if that means opposing amendments the group would ordinarily support.

The letter from American Israel Public Affairs Committee, or Aipac, could make it easier for lawmakers to vote down contentious amendments that have threatened to siphon Democratic support from the bill currently being debated on the Senate floor.